205143555151400 has 24 divisors (see below), whose sum is σ = 476958765727470. Its totient is φ = 82057422060480.

The previous prime is 205143555151391. The next prime is 205143555151427. The reversal of 205143555151400 is 4151555341502.

It can be written as a sum of positive squares in 3 ways, for example, as 182414250990724 + 22729304160676 = 13506082^2 + 4767526^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 512858887679 + ... + 512858888078.

Almost surely, 2^{205143555151400} is an apocalyptic number.

205143555151400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205143555151400 is an abundant number, since it is smaller than the sum of its proper divisors (271815210576070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205143555151400 is a wasteful number, since it uses less digits than its factorization.

205143555151400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025717775773 (or 1025717775764 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 41.

The spelling of 205143555151400 in words is "two hundred five trillion, one hundred forty-three billion, five hundred fifty-five million, one hundred fifty-one thousand, four hundred".